.flex-row {
    display: flex;
    flex-direction: row;
}
.row-center {
    justify-content: center;
}
.row-between {
    justify-content: space-between;
}
.row-end {
    justify-content: end;
}
.column-center {
    align-items: center;
}
.column-between {
    align-items: space-between;
}
.flex-column {
    display: flex;
    flex-direction: column;
}
.row-wrap {
    flex-wrap: wrap;
}
.border-box{
    box-sizing: border-box;
}
.box-container{
    width: 100%;
    height: 100%;
    padding:  10px;
}